made a better ratings page

app/models/beer.rb

@@ -12,4 +12,8 @@ class Beer < ApplicationRecord
   def to_s
     "#{name}, #{(Brewery.find_by_id brewery_id).name}"
   end
+
+  def self.top n
+    sorted_by_rating_in_desc_order = Beer.all.sort_by{ |b| b.average_rating }.reverse.take(n)
+  end
 end

app/models/brewery.rb

@@ -25,4 +25,8 @@ class Brewery < ApplicationRecord
     self.year = 2023
     puts "changed year to 2023"
   end
+
+  def self.top n
+    sorted_by_rating_in_desc_order = Brewery.all.sort_by{ |b| b.average_rating }.reverse.take(n)
+  end
 end

app/models/concerns/rating_average.rb

@@ -3,7 +3,7 @@ module RatingAverage
 
   def average_rating
     if instance_of?(Beer)
-      ratings = [self]
+      ratings = self.ratings
     elsif instance_of?(Brewery)
       # creates empty arrays for beers that have no ratings
       # + wraps the array in an array
@@ -14,7 +14,7 @@ module RatingAverage
       raise "Wrong class type for calculating average, #{self.class}"
     end
 
-    return 0 unless ratings.count > 0
+    return 0 unless ratings && ratings.count > 0
 
     ratings.map(&:score).sum / ratings.count.to_f
   end

app/models/rating.rb

@@ -6,6 +6,8 @@ class Rating < ApplicationRecord
                                     less_than_or_equal_to: 50,
                                     only_integer: true }
 
+  scope :recent, -> { Rating.order(created_at: :desc) }
+
   def to_s
     "#{beer.name}: #{score}"
   end

app/models/user.rb

@@ -66,4 +66,12 @@ class User < ApplicationRecord
     end
     highest[:name]
   end
+
+  def self.top n
+    sorted_by_rating_in_desc_order = User.all.sort_by{ |b| b.average_rating }.reverse.take(n)
+  end
+
+  def self.most_active n
+    sorted_by_rating_count_in_desc_order = User.all.sort_by{ |b| b.count_ratings }.reverse.take(n)
+  end
 end

app/views/ratings/index.html.erb

@@ -1,15 +1,69 @@
 <h2>List of ratings</h2>
 <p>There is <%= pluralize @ratings.count, "rating" %></p>
 
-<ul>
-  <% @ratings.each do |rating| %>
+
+<div class="container text-center">
+  <div class="row">
+
+    <div class="col">
+      <h2>Best beer</h2>
+      <div class="row">
+        <table class="col">
+          <tr>
+            <th><strong>Beer</strong></th>
+            <th><strong>Rating</strong></th>
+          </tr>
+          <% Beer.top(3).each do |beer| %>
+            <tr>
+              <td><%= beer.name %></td>
+              <td><%= beer.average_rating %></td>
+            </tr>
+          <% end %>
+        </table>
+      </div>
+    </div>
+
+    <div class="col">
+      <h2>Best brewery</h2>
+      <div class="row">
+        <table class="col">
+          <tr>
+            <th><strong>Brewery</strong></th>
+            <th><strong>Rating</strong></th>
+          </tr>
+          <% Brewery.top(3).each do |brewery| %>
+            <tr>
+              <td><%= brewery.name %></td>
+              <td><%= brewery.average_rating %></td>
+            </tr>
+          <% end %>
+        </table>
+      </div>
+    </div>
+
+  </div>
+</div>
+
+<h2>Most active users</h2>
+<ol>
+  <% User.most_active(3).each do |user| %>
     <li>
-      <%= render rating %>
+      <%= user.username %>, <%= pluralize user.ratings.count, "rating" %>
     </li>
   <% end %>
+</ol>
+
+<h2>Recent ratings</h2>
+<ul>
+  <% Rating.recent.each do |rating| %>
+    <li>
+      <%= rating.beer.name %>, <%= rating.beer.count_ratings %>, <%= rating.created_at %>
+    </li>
+  <% end%>
 
 </ul>
 
+
 <p>
   <%= link_to "New rating", new_rating_path, class:"btn btn-primary" %>
 </p>